James hollingsworth clegg



I. H. CLEGG.

APPARATUS FOR SCALI.NG,-CLEANING, OR OTHERWISE ACTING UPON SURFACES.

- APPLICATION men JULY 31. 1916.

1,323,964. Patented Dec. 2,1919.

JAMES HOLLINGSWORTH CLEGG, or LISCARD, WALLASEY, ENGLAND.

APPARATUS FOR'SCALING, CLEANING, on OTHERWISE ACTING UroN sunrn cns.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application filed July 31, 1916. Serial No. 112,381.

To all whom it may concern:

Be it known that 1, JAMES HOLLINGS- wou'rir GLncG, a subject of the King of England, and resident of Liscard, VVallasey, in the county of Chester, England, have invented new and useful Improvements in Apparatus for Scaling, Cleaning, or Otherwise Acting Upon Surfaces, of which the following is a specification.

This invention has reference to apparatus for operating upon surfaces, such as scaling and cleaning the surfaces of steam generators and other metal surfaces; cleaning or burnishing surfaces, and otherwise similarly operating upon the surfaces of metal, or other materials; and the invention has for its object to improve apparatus of this kind, and more particularly that type of such apparatus in which the operative tool or instrument is mounted on and worked by a flexible shaft, driven by an electric motor.

The apparatus according to. this invention is illustrated in the accompanying drawings of which Figure 1 is a view showing the motor part of the apparatus and its containing box. Fig. 2 is an outside elevation of the end of the flexible shaft, at which the tools are carried; and Figs. 3 and 1 are elevations showing one form of tool proper; and Figs. 5 and 6 show other two forms of tools. Fig. 7 represents a central sectional view of the mechanism shown in Fig. 2, to more clearly illustrate the detailed construction of said mechanism.

Referring now to the drawings, 1 is the electric motor, and 2 the starting and con trolling appliance, of which 3 is the handle;

. 4 is the body of the box in which these parts are contained; and 5 is the lid. The handle 3 projects out through one end of the box, so that when the box is closed the motor can be started or stopped or regulated as desired. 6 is the screw threaded end of the electric motor shaft; and to this end the ing sleeve 11.

tubular bearin 13 fixed in one end of the box 1; and the rigid terminal 8 of the internal flexible shaft 7 passes through this bear- The other end with a rigid tubular part 15, which in each end is provided with ball bearings 17 and the flexible shaft is provided at this part with a rigid spindle 16 which passes through and revolves within this tube, and is supof the tube 10 is provided ported by these ball bearings; and thisspindle 16 carries the tools proper; that is tools are fixed on its end which is threaded and has a shoulder as shown, and the tools are fixed in position by a nut or the like. i

It will be seen by reference to Fig. 7, that the tubular part, or member 15, is provided at each end with a recess 15, which forms seats for the caps or plugs 19, one of which forms the bearing for the spindle 16, while the other cap receives the rigid tube or,

guide 18, which is secured to the flexible bearing tube 10. I

The rigid tube part 18 is soldered or otherwise fixed on to the end of the flexible bearing tube 10, and the inner end of the bearing tube 15 is mounted and fixed on this part 18.

It will be noted that the coupling part 8 of the flexible shaft comes close up to the inner end of the bearing or bush 11, so that the flexible driving shaft is supported close to its end.

The flexible bearing tube 10 is slightly larger in diameter internally, than the external diameter of the flexible shaft 7; and

it is found that with this clearance, in the presence of a lubricant, the apparatus works better, and less'power relatively is used for operating the tool, and getting a given eflect.

The scaling or cleaning tool in the form shown in Figs. 3 and 4, consists of a carrier comprised of two disks 20 spaced apart, and vfixed to, and driven by the driving shaft end 16 which passes through them;the one disk being detachably fastened with other by screw bolts and nuts, or the like, to the other disk. Between these-disks the loosely mounted toothed cutters or operative tools 21 are placed; so that when the tool is re volved, these cutters can fly outward centrifugally; and they may have play in other directions in some cases.

There may be two, three or more of these cutters or devices in each complete tool.

Another form of tool, shown in Fig. 5 is suitable for sealing or clearing tubes; the cutters or operative devices 21" in the case being arranged in the carrier 20 one in front of the other. If desired the tools proper 21 may be in the form of an ellipse with serconsisting of a motor, a starting and 0011 two subscribing Witnesses.

trolling means therefor, a flexible bearing tube mounted contiguous to the motor, a flexible shaft supported in said flexible bearing tube and having one end connected with the shaft of the motor, a spindle terminal formed on said shaft, a rotary tool attached tosaid spindle terminal,a sleeve inclosing said spindle, a cap fitting one end of said sleeve, and forming a bearing'for said spindle, a cap fitting the other end of said sleeve, a tubular guide secured in said cap, 'and ball bearings disposed b6tW8811 said sleeve and spindle.

In testimony whereof I have signed my name to this specification in the 7 JAMES HOLLINGSWORTH CLEGG.

l/Vitnesses. V g r S MERVILLE GooDALL, FREDERICK OSB RNE.

presence of I 

